/Engine/Source/Runtime/Core/Public/Misc/ConfigCacheIni.h
Retrieve the names for all sections contained in the file specified by Filename
true if the file specified was successfully found;
bool GetSectionNames ( const [FString](API\Runtime\Core\Containers\FString) & Filename, [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & out_SectionNames )